Unable to launch Siebel Web

Hi,
I am new to Siebel. I installed the 7.8.2 Gateway, server, web server extensions and db server on my machine. When I installed the client and tried to start the call center web client, I get an error message with IE 6 -
Switch from current encoding to specified encoding not supported. Error processing resource 'http://localhost/start.swe'. ...

<?xml version="1.0" encoding="UTF-16"?>

Firefox displays the xml with this message -

This XML file does not appear to have any style information associated with it. The document tree is shown below.

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